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分析了新型聚晶材料АКТМ的物理-力学性质,研制了针状АКТМ与金刚石复合式钻头。试验研究了АКТМ直径对钻头钻进性能的影响,确定了最优尺寸。室内外钻进试验表明,这种复合式钻头能够有效钻进Ⅹ～Ⅺ级的坚硬岩石。
The physical and mechanical properties of the new polycrystalline material АКТМ were analyzed. The acicular АКТМ and diamond compound drill bits were developed. The influence of АКТМ diameter on drilling performance was studied and the optimal size was determined. Indoor and outdoor drilling tests show that this type of composite drill can effectively drill hard rocks of Grade X ~ XI.